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Finding the Fourth Proportional to 370.45, 510.87 and 239.50

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Solution

The fourth proportional to 370.45, 510.87 and 239.50 is: 330.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    370.45 : 510.87 = 239.50 : x
  2. Step 2: Convert to fraction form
    370.45/510.87 = 239.50/x
  3. Step 3: Cross multiply
    370.45x = 510.87 × 239.50
  4. Step 4: Simplify right side
    370.45x = 122,353.37
  5. Step 5: Solve for x
    x = 122,353.37/370.45
  6. Step 6: Final answer
    x = 330.28

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.